first one, will a buick converter fit on a chevy tranny? i've got an almost brand new one for my old BOP th350 and i'd like to put in in my chevy th400. i know that 350's and 400's are interchangable as long as they have the same bolt pattern, but not sure about the splines on a BOP and chevy. second question: has anyone heard of using a switch pitch converter on their chevy? buick used them in their trannies. i remember reading about a chevy truck that had a custom converter in it that was switch pitch. i think it would be awesome to have the launch of a high stall converter and a cruise rpm of a tight one. what do you guys think of them?